An Effective Hash-Based Assessment and Recovery Algorithm for Healthcare Systems

The immense improvements in the latest internet inventions encouraged the adaptation of technology within the healthcare sector. The healthcare systems storing highly sensitive information can be targeted by attackers aiming to insert, delete, or modify the data stored. These malicious activities may cause severe damage to the database accessibility and lead to catastrophic long-term harm to the patients’ health. The adaptation of the most advanced security paradigm does not guarantee full protection. It is possible that the attack is not directly detected. This highlights the need to assess the widespread damage scale before starting the repair of the inconsistent medical database. Within the scope of the damage assessment and recovery, several matrices-based, cluster-based, and graph-based models were introduced. The objective of this work is to correctly assess the damage and recover the database within a suitable time frame and efficient utilization of memory. We use a lightweight structure based on hash tables to gauge the incurred damage and recuperate quickly following an attack. The presented approach is contrasted with other existing ones and demonstrated superior performance

Coherent clusters in source code

This paper presents the results of a large scale empirical study of coherent dependence clusters. All statements in a coherent dependence cluster depend upon the same set of statements and affect the same set of statements; a coherent cluster's statements have ‘coherent’ shared backward and forward dependence. We introduce an approximation to efficiently locate coherent clusters and show that it has a minimum precision of 97.76%. Our empirical study also finds that, despite their tight coherence constraints, coherent dependence clusters are in abundance: 23 of the 30 programs studied have coherent clusters that contain at least 10% of the whole program. Studying patterns of clustering in these programs reveals that most programs contain multiple substantial coherent clusters. A series of subsequent case studies uncover that all clusters of significant size map to a logical functionality and correspond to a program structure. For example, we show that for the program acct, the top five coherent clusters all map to specific, yet otherwise non-obvious, functionality. Cluster visualization also brings out subtle deficiencies in program structure and identifies potential refactoring candidates. A study of inter-cluster dependence is used to highlight how coherent clusters are connected to each other, revealing higher-level structures, which can be used in reverse engineering. Finally, studies are presented to illustrate how clusters are not correlated with program faults as they remain stable during most system evolution

THEORETICAL AND EXPERIMENTAL STUDY OF THERMAL PERFORMANCE WITHIN A COUNTERFLOW WET COOLING TOWER

This study is interested on experimental and theoretical of heat and mass transfer phenomena in a counter-flow wet cooling tower. A simplified thermal model has been used to simulate the thermal behavior and the performance of the tower. The calculation of the heat and mass transfer parameters to determine the characteristics of the good operation of the tower. Eight experimental manipulations were conducted to study the influence of various parameters (such as: thermal cooling load, the flow of water and air) on the thermal performance of the tower. The results obtained show that the increase in cooling load contributes to a considerable reduction in the effectiveness of the tower, as well as the increase in the water flow is used to decrease the performance of the tower, while the increase in airflow is used to improve considerably the different parameters of performance. It can be seen that the results obtained by simulation coincide quite well with the experimental results. The minor discrepancies between the present simulation and experimental measurements can be attributed to the measurements uncertainties and simulation accuracy

Formación de hidroxiapatita, Ca5(PO4)3∙OH, en presencia de silicatos

Hydroxyapatite Ca5(PO4)3OH (HAp) is a crystalline phase which has several applications within the domain of special cements. This phase takes an important role in the cement reactions for the reconstruction of skeletal functions (medical domain). It is used also to improve properties of dental material. On the other hand, it is investigated to develop chemically bonded ceramics. In this paper we study the formation of HAp with β-C2S and C5PS, using some compositions in the rich lime portion of the system CaO-SiO2-P2O5-H2O (at atmospheric pressure and open system). These compositions lie in the range of: CaO: 67-71 %; SiO2: 3-18%; P2O5: 9-29% (Wt%). The preparations are made using solid state reactions, with thermal treatment at open system. The identification of phases was carried out using X-ray diffraction, Infra-Red absorption and Differential Thermal Analysis. We delimit a spectroscopy little domain lies in the range of CaO-69,5-70%; P2O5-16,2-19,5%; SiO2-11,1-13,6%. Within this domain, the crystalline phases solid state compatibility at temperature near 1000ºC are HAp, β-C2S, C5PS.La hidroxiapatita, Ca5(PO4)3OH (HAp), es una fase cristalina que tiene diversas aplicaciones en el ámbito de determinados cementos especiales. Esa fase juega un importante papel en las reacciones de cementos utilizados en medicina para la reconstrucción defunciones del esqueleto. Se utiliza también para mejorar propiedades de materiales de aplicación odontológica. Por otra parte, se está estudiando para desarrollar conglomerantes cerámicos. En el presente trabajo se estudia la compatibilidad en estado sólido de la HAp con β-C2S y C5PS utilizando, a presión atmosférica y recinto abierto, composiciones en la zona rica en cal del sistema CaO-SiO2-P2O5-H2O dentro de los límites siguientes. CaO: 67-71 %; SiO2: 3-18%; P2O5: 9-29% (en peso). El tratamiento térmico se realizó en estado sólido y en atmósfera abierta. La identificación de las fases se realizó a través de Difracción de Rayos X, Espectroscopia de Absorción Infrarroja y Análisis Térmico Diferencial. Se define una pequeña zona del diagrama de composición: CaO=69,5-70%; P2O5=16,2-19,5%; SiO2=11,1-13,6%. En este campo las fases cristalinas compatibles en estado sólido, formadas a 1.000ºC, son HAp, β-C2S y C5PS

Caracterización fisicoquímica del yeso natural de Mauritania

Gypsum from "Nderhamcha", a region in Mauritania, has been studied through three techniques: thermo-gravimetry, thermo-differential analysis, and X ray diffraction. It has been proved that the dehydration of this material happens in two stages, characterized by the closeness of their temperature. The thermal study as certains the two transformations due to the gypsum dehydration and those due to soluble and insoluble anhidrite.El yeso de Mauritania, de la región "Nderhamcha", ha sido estudiado a través de tres técnicas instrumentales: termogravimetría, análisis térmico-diferencial y difracción de rayos X. Se comprueba que la deshidratación de este material se efectúa en dos etapas, caracterizadas por temperaturas muy próximas. En el estudio térmico se comprueban las dos transformaciones debidas a la deshidratación del yeso y las debidas a la anhidrita soluble e insoluble

Oestrus induction in primiparous lactating rabbits by a 48 hours mother-litter separation: endocrine and behavioural responses

[EN] Primiparous does express low mating acceptance during lactation and different oestrus induction methods are employed to improve sexual receptivity. The aim of this work was to study the effect of a biostimulation, a 48 h doe-litter separation (DLS), in primiparous lactating rabbits on mating acceptance, external characteristics of the vulva and plasma concentrations of estradiol, testosterone, progesterone and cortisol. Seventy primiparous does from local population were divided on day 1 after kindling into 2 equal groups: control (C, n=35), where does always had free access to the nest-box, and DLS (n=35), where free suckling was adopted, except from day 9 to day 11 post-partum (PP). Litter size was equalised to 6-7 kits. Before mating, blood samples were obtained from 10 does per group on 9th and 11th d post-partum (dpp). The results showed that the DLS treatment improved the mating acceptance on 11th dpp (88.5 vs. 54.2%; P0.05). In contrast, cortisol plasma levels were not affected by the DLS treatment (-12.4 and -14.4% for control and DLS group; P>0.05). At day 11 PP, higher plasma E2 and P4 levels were described in DLS in comparison to C, although no significant difference was found, while plasma testosterone concentrations tended to be higher in DLS (165.5±27.1 vs. 114.9±31.9 pg/mL, for DLS and C, respectively; P=0.075). In summary, the 48 h doe-litter-separation acted as an efficient oestrus inductor in primiparous lactating rabbits. Insemination of biostimulated does must occur after the 1st suckling episode following the separation. This biostimulation method did not modify cortisol secretion of the rabbit doe.This work was supported by the National Research Program (Algeria). The authors wish to thank Dr. Bellazzoug of Algiers Hospital for the hormone assays.Ilès, I.; Benazzoug, Y.; Messili, A.; Boukhari, S.; Boiti, C. (2013). Oestrus induction in primiparous lactating rabbits by a 48 hours mother-litter separation: endocrine and behavioural responses. World Rabbit Science. 21(3):161-168. doi:10.4995/wrs.2013.1248.SWORD16116821

Alteration hydrothermale et deformation ductile des roches volcaniques acides associees au gisement sulfure de draa sfar (Jebilet Centrales, Maroc)

The volcanics and volcanoclastic rocks of Draa Sfar (Central Jebilet, Moroccan hercynian belt) are affected by ductile stress and hydrothermal alteration accompanied by a weak degree of metamorphism (greenschist facies). Some N-S oriented shearing zones, affect locally these formations while being the site of an important hydrothermal activity. The consequences of these transformations from a non to slightly- deformed rhyodacite, show that through these ductile shearing zones: (1) the mineralogical assemblage of hydrothermal alteration is essentially formed by chlorite, sericite, quartz and magnetite; (2) the gradual increase of the alteration indexes is accompanied by the destruction of the phenocrists and the recrystallization of the matrix by phyllosilicates and quartz; (3) the progressive transfer of material is more intense in the more deformed zones where the values of Ti, Al and Zr remain constant. These shearing zones played a very important role in the circulation of fluids and the transformation of the rhyodacite of Draa Sfar.Les roches volcaniques et volcanoclastiques de Draa Sfar (Jebilet centrales, Maroc hercynien) sont affectées par une déformation ductile accompagnée d’un métamorphisme de faible degré (faciès schistes verts) et d’une altération hydrothermale. Des zones de cisaillement de direction N-S, ont affecté localement ces formations tout en étant vecteurs d’une importante activité hydrothermale. Le suivi de ces transformations à partir de la rhyodacite non ou peu déformée, montre qu’à travers ces zones de cisaillements ductiles : (1) l’assemblage minéralogique d’altération hydrothermale est formé essentiellement de chlorite, de séricite, de quartz et de magnétite ; (2) l’augmentation graduelle des indices d’altération s’exprime par la destruction des phénocristaux au profit d’une matrice recristallisée en phyllosilicates et quartz ; (3) le transfert progressif de la matière est plus intense dans les zones déformées où Ti, Al et Zr restent constants. Ces zones de cisaillements ductiles ont joué un rôle très important dans la circulation des fluides à l’origine de la transformation en phyllosilicates de la rhyodacite de Draa Sfar

Restoring the valence-shell stabilization in Nd-140

A projectile Coulomb-excitation experiment was performed at the radioactive-ion beam facility HIE-ISOLDE at CERN to obtain E2 and M1 transition matrix elements of Nd-140 using the multistep Coulomb-excitation code GOSIA. The absolute M1 strengths, B(M1; 2(2)(-) -> 2(1)(+)) = 0.033(8)mu(2)(N), B(M1 ; 2(3)(+) -> 2(1)(+)) = 0.26(-0.10)(+0.11)mu(2)(N), and B(M1; 2(4)+ -> 2(1)(+)) <0.04 mu(2)(N) identify the 2(3)(+) state as the main fragment of the one-quadrupole-phonon proton-neutron mixed-symmetry state of Nd-140. The degree of F-spin mixing in Nd-140 was quantified with the determination of the mixing matrix element VF-mix <7(-7)(-13) keV.Peer reviewe

Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126

The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E2;21+→01+)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of 208Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30−13+10 W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus 208Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process